CITES – Appendix I and U.S. ESA as included in P. pygmaeus; IUCN – Critically Endangered.

Comments:

On the nomenclature, see Groves and Holthuis (1985). Reviewed by Groves (1971a, Mammalian Species, 4). Considered a species separate from P. pygmaeus by Groves (2001c), who summarized several previous sources suggesting this.